fix two things in my Android webview app

my client has an Android webview app with fragment, there webview has a sign up option, where they use social logins like google oauth, facebook and twitter signup, 1. everything is working great but the Google oauth just don't work, it work well on the website but not on the webview. 2. second thing that you have to do is to add slide left to refresh the page, many apps has pull down to refresh, but my clinet want that to be in slide to left format. it's an urgent project